What’s Vulnerable › Vulnerabilities

CVE-2025-38206: exfat: fix double free in delayed_free

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-04 · updated 2026-09-02
• Weakness: CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: exfat: fix double free in delayed_free The double free could happen in the following path. exfat_create_upcase_table() exfat_create_upcase_table() : return error exfat_free_upcase_table() : free ->vol_utbl exfat_load_default_upcase_table : return error exfat_kill_sb() delayed_free() exfat_free_upcase_table() <--------- double free This patch set ->vol_util as NULL after freeing it.

Affected products

• Debian Linux: 11.0
• Linux kernel: from 5.7 before 5.10.239; from 5.11 before 5.15.186; from 5.16 before 6.15.4 — fixed in 5.10.239, 5.15.186, 6.15.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.239, 5.15.186, 6.15.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/13d8de1b6568dcc31a95534ced16bc0c9a67bc15
• https://git.kernel.org/stable/c/1f3d9724e16d62c7d42c67d6613b8512f2887c22
• https://git.kernel.org/stable/c/29abaf93357f4a7d083cf399d4306999e20db31d
• https://git.kernel.org/stable/c/66e84439ec2af776ce749e8540f8fdd257774152
• https://git.kernel.org/stable/c/ac65f76db9b2ff3fbc9e198c0e9aaf81b111b7d0
• https://git.kernel.org/stable/c/d3cef0e7a5c1aa6217c51faa9ce8ecac35d6e1fd
• https://git.kernel.org/stable/c/ea27703eb0efbadcd45b9949526160ed90536a72
• https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

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